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The powerful adsorption capabilities of our  DEXSORB adsorbents are achieved by organizing cup shaped cyclodextrins into a high-surface area, high-affinity polymer network that features porous, crosslinked pathways through which micropollutants are drawn in and trapped in the cyclodextrin cups.
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PFOS
Contaminants
DEXSORB's Adsorption Kinetics
DEXSORB adsorbents combine porous, high-surface area with the high affinity of cyclodextrins to achieve rapid removal of micropollutants in water. Removal interactions occur throughout the networked screen of the .78 nanometer cyclodextrin cups, which are optimally sized to capture toxic micropollutants in trace concentrations of one part per billion or less. It is this molecular level of operation that gives our adsorbents their exacting nature and breakthrough effectiveness.
DEXSORB
Porous Polymer Network
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Selectivity
The sub-nanometer cyclodextrin cups in our DEXSORB adsorbents further enhance the selectivity of our materials through size-exclusion that resists fouling by natural organic particulates and larger inert molecules. In addition, by varying the crosslinking compounds or adjusting other molecular features, our adsorbents can be formulated to further enhance attraction to targeted contaminants.
PFOS Contaminants
with Natural Organic Particulates (brown shapes)
DEXSORB
Porous Polymer Network
Cyclodextrin - Nature's Adsorbent
Cyclodextrins are a family of sugars that are renewable and readily made from cornstarch. Within their three dimensional cup-shaped structure, cyclodextrins feature 0.78 nm high-affinity, hydrophobic pockets which form host-guest complexes to adsorb micropollutants and other contaminants. Cyclodextrins are classified as Generally Recognized As Safe (GRAS) by the U.S. Food & Drug Administration.
Cyclodextrin
Oligosaccharide
PFOS
Compound
C8HF17O3S
.78 nanometer
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About Cyclodextrin
The World's First High-Affinity Cyclodextrin Polymer Adsorbent
DEXSORB adsorbents are formed by linking low-cost cyclodextrins with specific monomers into insoluble networks of repeating structures that create porous pathways for pollutants to access the adsorbent cyclodextrin cups. The linking network and porous pathways in our adsorbents can be tuned through substitution of the crosslinked monomer to target specific contaminants.
Cyclodextrin
Monomer
Polymerization
Process
DEXSORB
Porous Polymer Network
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